---What do you think has made Tom feel down?-- his seat in the election I think.A. As

问题补充：

---What do you think has made Tom feel down?

---- his seat in the election, I think.

A. As he lost

B. Lost

C. Losing

D. Because of losing

答案：

A. As he lost

B. Lost

(答案→)C. Losing

D. Because of losing

解析：

试题分析:考查非谓语动词。由语境可知此处是回答what引导的特殊疑问句，what在句中做主语，所以用动名词losing，完整回答为：I think losing his seat in the election has made Tom feel down.,故答案选C。句意：--你认为什么让汤姆情绪低落呢？--我想是他在选举中的失利造成的。